1J79 permalloy strip, 1J79 iron-nickel alloy coil, Jiawang nickel alloy coil

规格：

齐全

包装：

标准

用途：

广泛

Magnetic alloys that are easily magnetized under the action of an external magnetic field and whose magnetic induction intensity basically disappears after the magnetic field is removed. The hysteresis loop area is small and narrow, the coercivity is generally lower than the resistivity, the eddy current loss is small, the permeability is high, the saturation magnetic induction is high. Generally processed into plates and strips. Prepared by melting method. Mainly used as various core components in electrical appliances and telecommunications industries (such as transformer cores, relay cores, chokes, etc.). Commonly used soft magnetic alloys include low carbon electrical steel, Amco iron, silicon steel sheets, nickel-iron soft magnetic alloys, iron-cobalt soft magnetic alloys, iron-silicon soft magnetic alloys, etc.
Physical Properties
A magnetic alloy that is easily magnetized under the action of an external magnetic field, and the magnetic induction intensity (magnetic induction) basically disappears after the external magnetic field is removed. The hysteresis loop area is small and narrow. The coercive force () is generally lower than (see precision alloys). At the end of the century, low carbon steel plates were used to manufacture motor and transformer cores. Silicon steel sheets with higher magnetic properties soon replaced mild steel in manufacturing products for the power industry. Alloys were introduced in 1999 to suit the needs of the telephone system of the time. Later, -alloys, -alloys and -alloys with different magnetic properties appeared to meet special purposes. China began producing hot-rolled silicon steel sheets in . Research on and other soft magnetic alloys began at the end of the 1990s and the production of some major soft magnetic alloys began one after another. The production of cold-rolled silicon steel strips began in the 1990s.
The main magnetic properties of soft magnetic alloys are: ① Low coercivity ( ) and hysteresis loss ( ) ② Resistivity ( ) High eddy current loss ( ) ③ Starting magnetic permeability ( ) and large magnetic permeability The magnetic permeability (/) of some alloys remains constant in the low magnetic field range. ④ The saturation magnetic induction () is high. ⑤ The hysteresis loop of some alloys is rectangular. The rectangular ratio is residual magnetism/large magnetic induction (r /) high. These magnetic properties are closely related to the structural state and composition of the alloy. Impurities such as carbon, sulfur, nitrogen, and oxygen in alloys are particularly harmful to magnetism because they distort the lattice and make it difficult to magnetize. Carbon and nitrogen can also cause magnetic aging phenomena. Soft magnetic alloys generally require large grain sizes in finished products in order to reduce the sum value. Generally, the magnetism of ferromagnetic metals varies with the direction of the crystal axis. For example, the direction of iron is easier to magnetize and the direction is harder to magnetize. Controlling grain orientation can therefore lead to better magnetic properties in specific directions of the material. The resistivity of iron () is low, and adding certain alloying elements can increase the value. The effect of adding silicon and aluminum is most obvious. Adding any alloying element (except cobalt) to iron will reduce its saturation magnetic induction.
Main types
It can be divided into low carbon electrical steel and Amco iron, silicon steel sheet, nickel iron soft magnetic alloy, iron cobalt soft magnetic alloy, iron silicon aluminum soft magnetic alloy, etc., which are mainly used in the power industry. Using alloys with high magnetic susceptibility and low core losses at higher magnetic fields. In the electronics industry, alloys with high magnetic permeability and low coercivity under low or medium magnetic fields are mainly used. At high frequencies, thinner strips or higher resistivity alloys must be used. Generally, plates or strips are used.